Alligator juniper: Diseases and Remedies (Explained for Beginners)

NOTE: The terms Alligator juniper and Juniperus deppeana are identical in this text; in reality, Juniperus deppeana is Alligator juniper’s biological word.

The alligator juniper is a species of tree that is native to Mexico and the southern United States and is characterized by its cracked bark that resembles alligator skin. The leaves of the alligator juniper are arranged in different ways, and the shoots are usually between 1 and 1.5 millimeters in diameter. Alligator junipers can grow up to fifty feet tall, making them one of the largest trees in the world.

Why does my Juniperus deppeana roots have rot?

Root rot on your Alligator juniper (Juniperus deppeana) can be dangerous if left untreated. In order to keep your plant alive, we strongly suggest that you follow our advice if the signs start to show: blackened and mushy roots.
Alligator

Why does my Alligator juniper have gray mold spots?

Gray mold spots are a type of fungus that is found a lot in flowers, and spreads quite rapidly. If you notice brown (or gray) spots, it is probably this fungus. Don’t ignore these symptoms, as they may end up killing your plant.

Our Solution

The solution is quite logical when you know the cause of the problem. Most of the time, it is due to overwater of the Juniperus deppeana. We advise you to remove the infected parts of the plant, cut off the infected roots and leaves, then repot your plant using sterile potting soil and a clean pot.

Why does my Alligator juniper have leaf spots?

Leaf If your plants exhibit symptoms like rapid color changes in the leaves or leaves that wilt or droop, we give you all the information you need to recognize them and rescue your plants. For owners of Alligator juniper, this kind of illness is among the most distressing.

Why are my Alligator juniper leaves turning yellow?

This is probably the most common problem in the gardening world, yellowing leaves. There are 2 main reasons for this phenomenon, overwatering, or a lack of nutrients.

Reduce your watering frequency when you fear your plants are being overwatered, and follow these steps to determine whether they may be lacking in nutrients:

Here are some signs of yellowing caused by the many deficiencies on the Juniperus deppeana in question:

  • Magnesium deficiency starts as yellow patches between leaf veins on older leaves. Veins stay green as yellow moves from the leaf center out. Leaf edges turn yellow last.
  • Yellowing between leaf veins is another sign of iron shortage, but young leaves on plant tops and branch tips are initially affected.
  • The newest leaves are first affected by sulfur deficiency, rendering them completely yellow.
  • Leaf edges turning bright yellow but inside leaf remaining green are signs of potassium insufficiency. The symptoms first appear on older leaves, and the leaf edges quickly become dark.
  • Nitrogen deficiency shows up as a general yellowing. Older, inner leaves turn yellow first. As it progresses, yellowing moves outward, eventually reaching young leaves, too.

Our Solution

According to the symptoms mentioned above, you just have to act accordingly. You can reduce your watering frequency, or fix a deficiency in Potassium, or Nitrogen, for that, you just have to buy a special soil for your deficiency, a consultant in a gardening store will know perfectly well how to inform you.

Is my Alligator juniper sunburned?

You can easily tell if your Alligator juniper (your Juniperus deppeana) has a sunburn. In this case, your plant will change color, starting to turn yellow or white, much like it does on us.

Sunburned

As we saw above, if your Alligator juniper receives too much water or not enough light, the leaves may also change color.

To find out if the yellow leaves have been sunburned, look at the part of the bottom that is tinted closer to the base. The yellow leaf is probably burnt and not something else if this portion stays greener.

Why are my Alligator juniper leaves turning brown?

Most of the time, leaves of a Alligator juniper that turn brown is a sign that your plant has been sunburned, it has probably been exposed to too much direct sunlight. Don’t panic, your plant probably won’t die from this, but its growth will take a hit.

Should I leave my Juniperus deppeana in direct sunlight?

No! If your Juniperus deppeana (or Alligator juniper) has the symptoms described above, don’t leave it in direct sunlight, that’s the reason why your Alligator juniper is in such a state!

Our Solution

As stated in the paragraph above, the cure is straightforward: simply position your plant’s Alligator juniper so that it is out of direct sunlight. With proper watering and this method, your plant should quickly come back to life.

Why are my Juniperus deppeana leaves drooping or wilting ?

This typically occurs when your Juniperus deppeana gets dehydrated. Large plants are more at risk since they naturally require more water than smaller plants.

Drooping

You may quickly determine if your Juniperus deppeana plant needs water by under-weighing its pot; if it seems light, the soil and roots are probably fairly dry and require water.

Our Solution

If the soil in the container is completely dry, you must first moisten it to guarantee that your plant’s roots absorb the benefits of the water. One common mistake is to drown the Alligator juniper right away after a dry time because you think it needs a lot of water.

This is the case, but giving too much water at once is the best way to finish it off, you should actually water the soil normally, resuming a quiet watering rhythm.

Caring Tips for Juniperus deppeana

Water Occasionally

Your plant needs water to survive, but it’s crucial to balance the amount and timing of watering. As we previously mentioned, overwatering could be catastrophic for your Juniperus deppeana.

You can tell if your plant needs water by touching the soil; if it still feels damp, it’s usually preferable to wait a few more days.

Always keep temperatures stable

It’s also a good idea to keep your Juniperus deppeana at a constant temperature, especially if it’s kept indoors. In general, at GreenShack, we suggest booking a temperature between 65 and 85 degrees F. Of course, keep your Juniperus deppeana away from radiators, air conditioners, and other sources of hot or cold air.

Keep your Alligator juniper Dust-Free

This one concerns indoor plants, just like on your furniture, dust is also deposited on the leaves of your indoor plants, the problem is that it can prevent them from receiving the necessary light, this would slow down (or even stop) the photosynthesis process, and eventually, they would lose their colors.

This would be a true journey into hell for your Alligator juniper and would also satisfy the pests.

To remove the dust, gently rub the plant’s leaves with a microfiber cloth. Dust can be removed more easily with a damp cloth, but stay away from corrosive substances like rubbing alcohol!

Keep drainage in mind

If you tend to overwater, you need to pay attention to your drainage, and we advise choosing a saucer and a pot with drainage holes if they are not already there.

You can add volcanic rocks (or any other pebbles with holes) to the bottom of your pot in the interim if your pots don’t already have holes in them. This will help to form a channel so that the water doesn’t pool there for too long (preventing the rot of the roots!).